hey guys i kinda need some help on a pickup srew. i was opening up my guitar (epi 66' sg reissue) to check the wiring on th pu's but i couldnt get the pickguard off. i was told by a friend to unscrew the pu screws. i got 2 of the screws off but the other 2 were either stripped out or are stuck in the pu themselves. any help yall can give on fixing the screw or removing the pickguard is much appreciated.